On Apr 30, 8:39*am, woods wrote:
I have a redwood fence that has quite a bit of green moss growing on
it in quite a few places. *(From watering the flowers I suspect). *My
wife wants me to power wash the moss off the fence, but I have some
concerns about how good this is for the redwood. *The fence was built
in 1961, so the wood is getting quite old. *The boards on the fence
are 1 X 8. *Does anybody have an opinion on this?

Try one of the moss killers that works with natural fatty acids,
several come in liquid form that you apply with a garden hose hookup.
Kill the moss first - takes about a week for the stuff to work and
loosen it up. Then with a broom or similar you can loosen the stuff
enough to take it off with a stong hose spray. This reduces the risk
of damage to the wood. I haven't tried redwood, but I have "firred"
cedar and spruce, and you will almost certainly see a difference in
the finish using a high pressure spray.